Lasting machine



May 23,1939. H. MULLER ET'AL 2,159,706

- LASTING MACHINE Filed; March 2,- 1958 7 Sheets-Sheet l May 23; 1939.

, H. MULLER ET AL Filed March 2, 1938 LAS-TING MACHINE -7 Sheets-Sheet 2 y 1939- H. MULLER ET A]; p 2,159,706

LASTING MACHINE Filed March 2, 1938 v Sheets-Sheet 4 1 f wembm May 23, 1939. MULLER ET AL 7 2,159,706

' LASTING MACHINE I Filed March 2, 195a 7 Sheets-Sheet 5 Q 3: [We/viola? May 23, 1939.

-H. MULLER ET AL 1 LAS-TING MACHINE Filed March 2, 1938 7 Sheets-Sheet 6 8 64/34 522; eys

May 23, 1939.-

Fil ed March 2; 1938 H. MULLER ET AL 2,159,706

LASTING MACHINE '7 Sheets-Sheet 7 dull. H2512)": qys

Patented May 23, 1939 PATENT OFFICE LASTIN G MACHINE Heinrich Miiller and Ernst Sauer, Frankfort-onthe-Main, Germany, assignors to the firm: Maschinenfabrik Moenus Aktiengesellschaft, Frankfort-on-the-Main, Germany Application March 2, 1938, Serial No. 193,573

- In Germany March 4, 1937 20 Claims.

This invention relates to a lasting machine for boots and shoes in which the margin of the upper is drawn upwardly by a gripper and laid over the edge of an insole in order there to be fastened by 5 suitable means such as. tacks or staples; It is usual in these machines, when lasting the toe part of a shoe, to slit the upper so that neighbouring parts of it can be overlapped without folding by a turning or twisting movement of the 10 girpper. Such slitting is effected by knives or cutters forming part of a slitting device which is normally inoperative but may be thrown into operation whenever required. Usually two such knives are provided, working one at a time, and

slitting the margin of the upper at one side of fthe gripper or the other according as the right or left hand. knife is thrown into operation.

slitting devices of the aforementioned kind have been arranged both infront of and at the g rear of the gripper, as seen from the operators stand, the latter arrangement having the advantage of providing a clear view of the work, whereas with the slitting device in front of the gripper observation is greatly obstructed. Nevertheless this arrangement has usually been given preference because it permits the knives a particularly effective slitting motion. The .knives, for this purpose, were encased in a box-like structure from which they emerged with a. swinging r31) action. A slitting device, however, is known in which this box is divided into two parts arranged at the rear of the gripper one at each side of the wiper, by which arrangement the advantages of both the aforesaid types of slitting devices could 3:3 largely be combined, the knives being swung outwardly by positive action and returned resiliently.

This invention is an improvement on the type of slitting device arranged at the rear of the gripper as seen from the operators stand, and

, 4o chiefly consists in the provision and the particular arrangement of parts with the object in view of obtaining an effective, reliable and amply dimentioned structure of the said kind, and one in which the entire space in front of the working .45 parts of the machine may be left free of any parts of the slitting device so as to be fully accessible whenever required.

A further object is the elimination of any resilient control, the knives being alike positively -50 actuatedon their working stroke and on their return "stroke, so that their withdrawal from the workpiece is certain, and risk of jamming or retenti'on in the leather is obviated.

The entire slitting device is conveniently built 55 upon a base plate positioned between the machine standard and the head of the machine; this arrangement facilitates fitting of the parts, and makes it possible to equip existing lasting machines with the new slitting device. The driving means for the slitting device include a shaft hava ing two clutches which can be thrown into and out of gear as required by means of the grippercontrolling knee lever with which this type of machine is usually provided, and two cam discs for controlling the movements of the knife holders. A locking device prevents the knives advancing into working position both at the same time, and ensures uncoupling of the driving means when the knife last in action is no longer required, the knife being returned to its position 15 of rest even if by inadvertance the controlling means have not fully or properly been actuated.

Other objects and improvements will appear from the following description of the accompanying drawings illustrating by way of example a slitting device according to the invention and in which Fig. lis a front elevation of the base plate with the driving parts of the slitting knives partly in section,

Fig. 2 is a side elevation thereof, showing also the position of the device within the head of the machine,

Fig. 3 shows in plan the mechanism by which the knives may be put into and out of action,

Fig. 4 is a sectional elevation of this mechanism, If

Fig. 5 is a side elevation of'the slitting device on the left hand side of the machine,

Fig. 6 is a plan thereof,

Fig. '7 shows a modified scheme for uncoupling the slitting devices,

Fig. 8 illustrates a modified form of the oper ating means for the new slitting device in a part sectional elevation similar to Fig. 1, 40

Fig. 9 is a side view thereof,

Fig. 10 is a detail.

Arranged between the standard I of the lasting machine and the machine head 2, which in Fig.

1 is indicated only by some of its bearing parts, 4 is the base plate 3 upon which the whole slitting device is substantially built up. Upon the base plate, at the right and left thereof, are two brackets 4 carrying a cross shaft 5 driven by the vertical shaft 1' through a bevel wheel 6. This vertical shaft, which is driven from the main shaft la of the machine, normally serves to drive the tacking apparatus of the machine; for the purpose of driving the slitting device it has been extended downwardly and bears, upon this exten- ,65

sion, a bevel wheel 8 meshing with the bevel wheel 6 on shaft 5.

Loose upon the shaft 5, or on the bushing l3 surrounding it, adjacent the brackets 4, are two control discs 9 and [8, in each of which are cam tracks i I and [2. The hub of each disc is drilled at M to receive a clutch pin l5on a clutch l6 fast upon the shaft 5. The clutches can slide along the shaft 5; they are connected by a rod l8 screwed into the end plates l1, and are shifted by a control slide l9, carrying a fork 2Dwhich engages between the right hand clutch l8 and its end plate l1.

The control slide i9 moves in a guide 2| mounted on a lateral arm 22 on the base plate 3. It. is governed by two cam slides 23 and 24 (Fig. 3).

The cam slide 28 can be moved forward or back I ward by a hand lever 25 to put the sl tting deviceinto or out of operation. In it is a triangular opening 26 in which engages a stop pin 27 on the spring-pressed slide l9. Within a bore inthat slide are two similar springs 28 (Fig. 4) secured in position by threaded plugs 29. These press endwise upon two sliding bolts 38 between which is a stud 3i depending from a slide 32, also moving in the guide 2i directly above the control slide l9. vIn the slide 32 is a slot 33 for the passage and movement of the stop pin .21 of control slide [9, so that this pin does not convey motion from one slide to the other. In addition the slide 32 carriesa follower 34 projecting into a cam slot 35 in the cam slide 2 5. The cam or slide 24 is connected by a yoke 38 (Fig. 2) to the bell-crank lever 3'1 of the gripper turning box 38-. On turning thewell-known (and therefore not illustrated) knee lever, the bell-crank lever 3'! is swung about its pivot by rod 39, and theyoke 36 causes the cam slide 24 (Fig. 3) to share the movement, and thus bring either the part 35' or the part 35" .of thecam slot 35 into engagement with the follower 34, shifting it toright or left as the case may be. This displacement is transmitted by stud-3l, bolts 35, and springs 28 to slide l9 and through the fork28t0 thev clutches l8, and either the righthand control disc l8 orthe lefthand disc!) becomes. connected by its clutch pin IE to the driven shaft'5 accordingas theknee lever is swung to right or left.

But this shifting of slide l9 and actuation of the clutches by the camslide 24 can take place only when the slitting device is in gear. Theqcam slide 23 controlled by handle 25 frees the control slide l9 only when the broad portion of its triangular opening 28 registers with the stop pin 21. In the position shown in Fig. ,3 the pin 27 is confined in the apex of the triangle and. nodisplacement of the control slide I9 ispossible. But notwithstandingthat thecontrol slide is thus locked the cam slide 24 can still move when the gripper swinging device, i. e. the knee lever and bell-crank lever 31, is actuated; for the slot 33permits movement relatively to the stop pin 2'! and the springs 28 yield to permit movement of thestud 3i relatively tothe stationary control slide l9.

If now, the control slide l9 being freed bythe cam slide 23, one of the two, slittingdeviceasay that on the left handside of the machine, is put into gear by the operation of cam slide 24, movement is transmitted from the control disc 9 or ill to the following mechanism, which is duplicated on the two sides of the machine, Figures 5 and 6 showing that on the left hand side actuated by the disc 9.

Pivoted on a bracket 40 on the baseplate 3 are two cam levers 4i and 42 (Fi gs. 5 anol 6),.the

9 begins to rotate with the shaft 5.

former carrying a roller 43 running in the cam track I l and the latter a roller 44 in the cam track l2 of the control disc 9. In the free ends of the levers are sockets to receive the ball ends of adjustable connecting rods 45 and 48 respectively, these rods having ball and socket connections to a bell-crank lever 41 and a one-arm lever 48 respectively.

Another bracket 49 is bored to receive sliding bolts 58 secured to a knife guide 5| in which slides the stem54 of a knife holder 53. Feathers 55 or the like prevent the stem 54 turning.

' When the left-hand clutch l4 l5, l6 (Fig. 1) is thrown into gear by the operation of the part 35f of the slot in cam slide 24, the control disc The first result isthat lever 42 (Fig. 5 and 6) is rocked so as through rod 46 to swing lever 48 toward the right and thereby through link 56 to advance the knife holder 53 within its guide 5| toward the right in Fig. 6. :Thetipof the knife moves from the position a. to point 12. Then thecam path H comes into action, and causeslever= 4tto rock, andthrough rod 45' to turn thebell cranklever 4! about its pivot 51, so that its free arm-acting through link 58 shifts the knife guide-5l and. its sliding bolts 50 inwardly. Thus while the parts 42, 48, 48 remain at rest the tip of the knife moves laterally, without simultaneous forward movement, from'point b of its path --to point c, cutting into the upper. leather while it is held by the lasting gripper 59 in tightened condition. Next, with the parts 4|, 45 and 41 at rest the knife holder 53, 54, moving in its stationaryguide 5l,-is again advanced in a straight line by the lever 42 operating'throughrod 46, lever=48 and link 56, soas to cause the knife edge to move from c to d and slit the leather. The knife=is then positively returned along the at first curved and then straight path d-a, to the starting position trolled and preferably'positively actuated brake --a spring catch 8| adapted to engage in .a notch of, the cam disc. This spring catch' may be mounted on the wiper carriage (not shown) so that in case the cam disc should not fully reach its 'end position it would be engaged by the catch in the next return movement of the wiper and its rotation completed.

To prevent the knife on one side of the slitting device being advanced while that on the other side is in operation and to prevent the knife last in operation remaining in its forward position through incomplete disengagementof the coupling, which might lead to damage, a locking device is provided which makes it impossible .to shift one knife until the other has beenreturned to itsposition of rest, and the same deviceralso separates the clutch members l4, l5 if. they have remained in engagement owing to an incomplete movement of, the knee lever. This device, in the .a bearing64 for a cam lever 65 which has-a roller 66 pressed on a cam 81 by the spring 68. At its .free end the lever 65 carries alockingplate'fifl co-operating with a locking pin 80 which it can depress into recess 8| in the stationary member 82.

In Fig. 2 the pin 80 is in its zeroposition in which it can be reciprocated freely over the member 82. This is the non-locking position in which the slitting device control may be actuated. If with pin 80 in this position one of the clutch pins I5 (Fig. 1) is brought into engagement with the recess I4 in the adjacent control disc, the coupling movement shifts the bar 62 and moves the pin 80 out of register with the locking plate 69, and over the non-recessed part of member 82 to right or left of the recess 8I. Declutching returns it to its mid-position, and while there it is momentarily lowered by the action of the cam lever 65 on the locking plate 69 into the recess 8|. If, owing to incomplete manipulation, the

H clutch I4, I5 has not become fully disengaged,

I disc.

through the disc.

thelocking pin 80 will come to rest above one of the slanting end faces of the recess 8|, upon which it will be pressed on the descent of lever 65. It is thus shifted laterally in its descent, together with the bar 62 and'the parts connected to the yoke 36, 36, and so the clutch I4, I5 is disengaged.

I Instead of the locking device just described, any other arrangement may of course be employed which would prevent the simultaneous op eration of both slittingdevices, or the sticking of one of the knives or of one of the clutches respectively. Such locking device, for example, may have the form illustrated in Fig. 7, in which the clutch pin I5 is not arranged in the clutch I6, as in the above construction, but in the control A stud II is located in a hole I drilled This stud has a rounded head I2 pressed outwardly by a spring I3 against a stationary cam plate I4 and normally projects somewhat further than the clutch pin I5, so that its other end is held engaged in a hole I5 in the clutch member I6. When zero position is reached in the rotation of the control disc the stud II springs into a cavity I6 in the plate I4, and is thus withdrawn from the hole I5. Thus in each rotation the engagement of the clutch member I6 with the control disc is only interrupted ex- I actly in zero position even if for any reason the clutch pin I5 should have become disengaged prematurely from the recess in the member I6. When the disc again begins to turn the head I2 runs up an inclined surface on the cam plate I4 and is thus re-engaged in the hole I5. This arrangement has the advantage of being particularly simple in construction. It eliminates a separate control and in contradistinction to the aforedescribed locking device it can be mounted upon the base plate 3 together with the parts controlling the knife movements.

1 The modification of the operating device shown in Figs. 8 and 9 omits the hollow shaft 5 and the pin clutches I5. These parts are replaced by an ordinary shaft I05 and a fixed clutch member I I6 at each end of the said shaft cooperating with loose clutch members II4 upon which the control discs 9 and I0 are arranged. Coupling between these parts is effected by means of a slidable latch H5 in the loose member H4 and a shifter II! on the fast member H6. The said latch has the shape shown in Figs. 9 and 10 comprising a reduced portion H8 and it is pressed upon by a spring II9 leaning against an abutment I and tending to push the latch outwardly with its body portion in the way of the shifter I II as illustrated in Fig. 10A. During the normal run of the machine the slitting device is not in operation so that shaft I05 and its clutch members H6 and H4 are at rest.

Throwing the slitting device into actuating position is effected by means of a hand lever I2I. In Fig. 8 this hand lever is shown in a position in which it would allow the aforementioned knee lever (not shown) to operate one of the slitting devices either on the right or on the left hand side of the machine by the up or down movement of the knee lever rod 39. It will be seen that similar to the cam slide 23 and stop pin 21 in Fig. 3 a slotted member is arranged in the shape of a bell crank lever I22. The horizontal arm of said bell crank lever has a substantially triangular slot I23, while the lower vertical arm is connected to a similar arm I24 on the other side of the machine by a rod I25. Hand lever I2I turns on a pivot I26 and is provided with an arm I21 on which is a pin I28 adapted, bythe movement of the hand lever, to be positioned within the pointed end of the triangular slot I23 or in the base of the triangle as shown in Fig. 8. In the former case the bell crank lever I22 is prevented from rocking and any movement up or down of the knee lever rod 39 will be taken up by the springs I29 being compressed as by the pins I30 sliding in casings I3I which are fastened to the knee lever rod 39.

Turning of the hand lever IZI into the position of. Fig. 8 places pin 128 in the broad end of slot I23 as shown. In this position the pins I30, on the up or down movement of the knee lever rod 39, will cause the horizontal arm of bell crank lever I22 to rock. Presuming rod 39 to be moved in an upward direction as indicated by the arrow 1", in this case the lower pin I30 turns the horizontal arm of the bell crank lever upwardly and thereby rocks its pivot pin I32 so as to cause a lever I33 to tilt inwardly toward the left. This lever is provided with a guide I34 in which moves a slide I35, said slide being normally kept in a raised position by a spring arranged between its lower end and an abutment on the lever I33. Tilting of the said lever I33 brings the slide I35 into the path of the constantly rotating depresser I36 on the clutch II6 which depresses the slide against the action of its spring and causes a projection or nose I31 to depress a trip lever I38 against the action of its spring I39 and to thereby tip a blade I40 about its pivot I4I out of the way of the latch H5, H8 (Fig. 10A). Normally the said blade has its position underneath the latch and keeps the latter pushed back within the loose clutch member II4, as shown in Fig. 103, so that the constantly rotating shifter III of the fast clutch member II6 passes underneath its shoulder II5a without touching it.

The blade I35 having been tipped in the manner just described, latch H5 is pushed by its spring II9 into the position shown in Fig. 10A in which the shifter II! is able to abut with the latch and to cause same to join its rotation and thus also to rotate the loose clutch member II4 with the control disc I0, which now moves the cam levers 4| and 42 (Figs. 5 and 6) to operate the slitting device in the manner already described.

So long as the knee'lever rod 39 is kept in its upper position the slitting device on the right hand side of the machine will continue in its operation and a slit will be cut into the upper at each revolution of shaft I05. As soon, however, as rod 39 is returned into its neutral position the various parts reassume their non-working positions according to Fig. 8, in which lever I33 is swung back with its slide I35 out of the way of the depresser I36, so that the trip lever I38 is-released and I4!) returned by spring I39 into its verticalposition in-which it is engaged by the-step II8 of latch II5 (Fig. 9)-so that thelatteris raised with its edge II5a out of the path of I the shifter II'I. No slitting operation is now being performed. 7

If the operation of the'left hand slitting device is required rod 39 is moved by the-knee lever in a downward direction as indicated by the arrow I. This causes bell crank lever I22 to swing its depending arm towards the left-and by means of the connecting rod I25 to tilt lever I33a in- Wardly over the trigger I 38 whereupon the operation just described will nowbe performed by the devices on the'left hand side of the machine.

What we claim is:

1. In a lasting machine having a gripper and slitting knives at the rear of thegripper one at each. side of it, means for operating the knives comprising a driving member at right angles to the main shaft of the machine, control members arranged upon said driving member, a clutch to connect said control members one at a time to saiddriving member, and means arranged on the two sides of the machine-standard-for transmitting motion fromsaid control membersto the knives.

2. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it, means for operating the knives comprising a lay shaft extending from right to left in the machine, control members arranged upon said lay shaft, -a clutch'to connect said control members one at a time tosaid lay shaft, and means arranged on the two sides of the machine standardfor transmitting motion from said control members to the knives.

3. In alasting machine having'a gripper and slitting knives at the rear ofthe gripperone at each side of it, means for operating the knives comprising a lay shaft extending from right to left in the machine as seenfrom the operators stand, a clutch member near each end of said lay shaft, a control member adjacent each of said clutches, means to operate said clutches to connect said control-members one at a time to the lay shaft, and means arranged on the two sides of the machine standard for transmitting motion from said-control members to the knives.

4. In a lasting machine having a gripper and slitting knives atthe rear of the gripper one at each side of it, means for operating the knives comprising a lay shaft extending fromright to left in the machine as seen from the operators stand, a clutch'member near each end of said lay shaft, a control member adjacent each'of said clutches, a movable clutch rod arranged substantially parallel to said lay shaft and connecting the clutch operating means at one" end of the lay shaft withthose at the other end thereof, means to move said clutchrod so as to operate one clutch at a time, and meansarranged on the two sides of the machine standard for transmitting motion from said control members to the knives.

5. In a lasting machine having a gripper and slitting knives operating from'the rear "of the gripper, one at each side thereof, towards the front of the'machine, 'a lay shaft, a clutch at each end of said lay shaft rotating therewith, a cam adjacent each of said clutches an'dl'oosely rotatable on said lay shaft, means to'operate said clutches, to connect said cams, one at a time, to the lay shaft, a clutch rod arranged substantially parallel to the lay shaft and connecting the clutch operating means for the two clutches with one another, and means arranged on the two sides of the machine standard for transmitting motion from said cams to the knives.

6. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it and a main shaft for imparting motion to the instrumentalities of the machine, means for operating the slittingknives comprising alay shaft arranged below the main shaft, a gear between said main shaft and said lay shaft for imparting constant positive rotation to said lay shaft, a clutch member connected to each end of said lay shaft, control members adjacent said clutch members and loosely rotatable on the lay shaft, means to connect said clutches one at a time to said control members, and means arranged on the two sides of the machine standard for transmitting motion from said control members to the knives.

'7. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it and a main shaft-for imparting motion to the instrumentalities of the machine, means for operating the slitting knives comprising a lay shaft arranged below the main shaft at substantially right angles thereto, a vertical shaft between the main shaft and the lay shaft, gear wheels to derive motion from the main shaft to the vertical shaft and'another set of gear wheels to transmit said motion positively to the lay shaft, a clutch at each end of the lay shaft rotatable therewith, a cam adjacent thereto and arranged loosely upon said lay shaft, means to connect said clutches one at a time to said cams, and means arranged on the two sides of the machine standard for transmitting motion from said cams to the knives.

8. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it, means for operating the knives comprising a lay shaft, a clutch and a control member at each end of said lay shaft, means to connect said clutches one at a time to said control members, means arranged on the two sides of the machine standard for transmitting motion from said control members to the knives, and a base plate fittedbetween the machine standard and the head of the machine provided with bearings and supporting surfaces for carrying substantially all the said knife operating means.

-9.In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it, means for operating the knives comprising a constantly driven shaft, a clutch and a control member at approximately each end of said shaft, manually operable means to connect said control members one at a time to said clutches and the shaft, a knife selecting device, means arranged on the two sides of the machine standard for transmitting motion from said control members to the knives, and automatically operating means for securing the return of the parts into zero position if the return'of the said selecting device is incompletely effected.

1-0. In a lasting'machine having a gripper and slittingknives at the rear of the gripper one at each side of it, a constantly rotatable lay shaft, a fastclutch member fitted to each end of sai'dlay shaft and a loose clutch member adjacent thereto, a control member fixed to each of said loose clutch members, a spring-controlled latch in each of said loose members and a shifting member on said fast clutch members co-operating with said latch, means for normally withholding said latch out of the path of said shifter, means for rendering said withholding means inoperative, and means arfranged on the two sides of the machine standard extending from right to left of the machine, a fast clutch member fitted to each end of said lay shaft and having a shifting member protruding from its circumference, a loose clutch member on the lay shaft adjacent said fast member and having a spring controlled latch slidable within it, said latch being provided with a set-off portion, a movable member co-acting with said set-off portion for normally holding said latch within said loose ,clutch member, manually operable means for temporarily withdrawing said movable member so as to release said latch and permitting it to protrude with its body portion into the circular path of the said shifting member, a cam fixed to said loose clutch member, and means arranged on the two extending from right to left of the machine, a fast clutch member fitted to each end of said lay shaft and having a shifting member protruding from its circumference, a loose clutch member on the lay shaft adjacent said fast member and having a spring controlled latch slidable within it, said latch being provided with a set-off portion, a mov- 40 able member co-acting with said set-off portion for normally holding said latch within said loose clutch member, a manually operated rocking lever, a spring controlled slide within a guide of said rocking lever protruding therefrom and having a projection, a trip lever in connection with said movable member and positioned for co-operation with said projection, a depresser on and constantly rotating with said fast clutch member and adapted to depress said slide in said rocking lever, when same is rocked towards the said trip lever so as to remove said movable member from contact with said latch, a cam fixed to the said loose clutch member, and means arranged on the two sides of the machine standard for transmitting motion from said cams to the knives.

13. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it, means for operating the knives comprising in combination, a shaft, means to rotate said shaft, a fast clutchmember and a loose clutch member at each end of said shaft, manually controllable means to connect said fast and loose clutch members at one side of said shaft, a cam having two cam grooves on each of said loose clutch members, a connection for connecting said manually controllable means of one side to those of the other side of the shaft and comprising a lever having a triangular slot, a knife selecting device having two spring controlled pins for rock ing the said lever, a hand lever and a stop pin on said hand lever adapted to be moved into the apex of said triangular slot for locking said manually operable means against movement, and means arranged at the two sides of the machine standard for transmitting motion from said cams to the knives when said manually operable means have been thrown into gear.

14. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it, means for operating the lmives comprising a lay shaft, a clutch and a control member at each end of said lay shaft, means to connect said clutches one at a time to said control members, means arranged on the two sides of the machine standard for transmitting motion from said control members to the knives, a base plate fitted between the machine standard and the head of the machine, bearings on said base plate for carrying said lay shaft, cam levers and knife holders at each side of said base plate, bracket arms extending from said base plate for movably supporting said camlev'ers and knife holders, and connecting means between said cam levers and knife holders for transmitting motion from the former to the latter.

15. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it, knife holders capable of lengthwise sliding motion, knife holder carriers capable of sliding motion crosswise thereto, means for imparting motion to said knife holders and knife holder carriers comprising a constantly driven shaft, clutch members and cams at approximately the ends of said shaft, and manually operable means for connecting said cams one at a time to said shaft.

16. In a lasting machine having a gripper and slitting knives at the rear of the gripper one at each side of it, knife holders capable of lengthwise sliding motion, knife holder carriers capable of sliding motion crosswise thereto, means for imparting motion to said knife holders and knife holder carriers comprising a constantly driven shaft, clutch members and cams at approximately the ends of said shaft, cam levers and levers for moving said knife holders and knife holder carriers, manually adjustable connections between the said levers, and manually operable means for connecting said cams one at a time to the said shaft.

17. In a lasting machine having a gripper and slitting-knives at the rear of the gripper one at each side of it, knife holders capable of lengthwise sliding motion, knife holder carriers capable of sliding motion crosswise thereto, means for imparting motion to said knife holders and knife holder carriers comprising a constantly driven shaft, clutch members and cams at approximately the ends of said shaft, cam levers and levers for moving said knife holders and knife holder each side of it, a base plate arranged between the machine standard and the head of the machine and entirely independent of other structures of the lasting machine, bearings on the said base plate, a constantly drive-n shaft journalled in the said bearings in a position to extend from right to left of the machine, a clutch and a cam at approximately each end of said shaft, two bracket arms extending from the base plate on each side of the machine standard, one of said arms serving to support cam levers and the other arm to carry a guide for slidably supporting the knife holder and knife holder carrier, and adjustable connections between said cam levers-and the-slitting knife operating means.

19. In a lasting machine havinga gripperand slitting knives at the rear of the gripper one at each'side of it, knife holders capable of lengthwise sliding motion; knife holder carriers capable of sliding motion crosswise thereto, means for 20.-In a lasting machine having a gripper and slitting knives at the'rear of the gripper one at each side of it, a knife holder for each knife capable of lengthwise sliding motion, a knife holder carrier forming a guide for said knife holder and provided with slidable supporting members for movement crosswise to the movement of the knife holder, afixed guide for slidably supporting said knife holder carrier, means for imparting motion to said knife holder and knife holder carrier comprising a constantly driven shaft, control members and. clutch members on said shaft, and manual :clutch operating means for connecting said control members one at a time to said shaft.

HEINRICH MULLER. ERNST SAUER. 

